deletions | additions       diff --git a/section_Week_03_textbf_Monday__.tex b/section_Week_03_textbf_Monday__.tex  index 9ddce98..2ecc17c 100644  --- a/section_Week_03_textbf_Monday__.tex  +++ b/section_Week_03_textbf_Monday__.tex 
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\begin{itemize}  \item The IP is calculated in a different way... In particular Lucas is defining IP the distance of minimum approach to the primary vertex, whereas in the Aleph paper they give this definition at page 2 (chapter 3, second par) but they use instead something more complicated, as shown in fig 1 at page 4.  \item I have to understand what the ILD formula $\sigma = 5 \oplus 10 / p \sin^{3/2} \theta \mu$m of the resolution takes into account  \item He is saying that for the moment, he is considering the multiple scattering trough the beampipe and the finite resolution of the algorithm that finds the minimum. The resolution of the detector tracker  is already taken into account because we calculate the resolution with the smeared tracks (smeared by papas, but you don't do this with the leptons...whereas the impact parameter of the lepton could be useful (maybe) __leptons of course are a second order correction__). If this is true, I understand that the ILD formula is a parametrization of the effect of the tracker resolution. Anyway  we need to know this resolution...I don't  understand if we need to extract this from the simulation...  \item He calculates the b-tag with the ATLAS and CMS algorithms, that are more complicated than that used by ALEPH...   \end{itemize}  \item I don't know how to test the code I have written...really no idea...